NO_FLICKER_MODE=1 still breaks click-and-drag terminal scrolling on remote desktop

Summary

Re-reporting #43209 because it was closed as stale on May 13, 2026, but the issue is still relevant.

Click-and-drag to scroll the terminal works normally without NO_FLICKER_MODE=1, but stops working when the environment variable is set.

Environment

• Environment: Remote desktop from Android phone
• NO_FLICKER_MODE: 1 (enabled)
• Behavior: Click-and-drag scrolling is broken with the flag enabled, but works without it

Steps to Reproduce

1. Enable NO_FLICKER_MODE=1.
2. Connect via remote desktop from an Android phone.
3. Attempt to click and drag to scroll the terminal up or down.
4. Observe that scrolling does not work.

Expected Behavior

Click-and-drag scrolling should work the same with and without NO_FLICKER_MODE=1.

Related Issues

• #43209
• #42297
• #41965